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Customer question

Is 6 W enough to light a corridor?

Reviewed under Eng. Abdullah Al Balushi

The answer

Yes, corridors need calm lighting so they don't strain the eyes.

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Common mistakeAiming light at glass and mirrors

“Got a spotlight hitting the windows at night? You're blinding your guests!”

The problem
Aiming lights at reflective surfaces such as glass creates distracting glare that blocks the view outside.
Technical explanation
Light should be aimed at walkways and opaque walls. Avoid aiming lights at windows at night entirely, so you can enjoy the view of the garden.
The result
A comfortable evening sitting and a clear view of the villa's garden without distraction.

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Common mistakeLighting windows and mirrors

“Lighting your mirrors and windows to make your home look luxurious? You're blinding yourself!”

The problem
Aiming lights directly at glass and mirrors bounces the light back as very uncomfortable glare.
Technical explanation
Glass doesn't reflect light softly like painted walls do, so lighting should be from the side or hidden behind the mirror (Backlit) to avoid discomfort.
The result
Hotel-style bathrooms and corridors, without visual discomfort.

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Common mistakeRandomly placed bollard lights

“Has your garden turned into an airport runway because of your path lights?”

The problem
Placing bollard lights too close together, randomly and excessively
Technical explanation
The ideal path bollard is spaced every 4 to 5 metres, and its height should ideally be half the width of the area being lit
The result
Elegant, calm garden paths with no extra fixture costs

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Common mistakeLighting glass windows

“Have lights aimed at your living room windows? You've just blinded your guests!”

The problem
Aiming light at glass makes it act like a mirror, reflecting harsh light into the eyes and blocking the view of the garden.
Technical explanation
Light should be directed at walkways and solid walls (Wall Washer), completely avoiding reflective surfaces.
The result
A comfortable living room at night with a clear view of the garden.

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Common mistakeChoosing the wrong wattage for façades

“Want your villa façade to stand out from afar? Don't fit it with a 5 W light!”

The problem
Using very weak Grazer fittings for tall façades.
Technical explanation
A tall façade needs a 36 W fitting (about 2300 lm) to reach the top of the building, while 5 W (300 lm) is left for soft lighting of lower walkways.
The result
A palace façade that catches the eye of the whole neighbourhood.

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Common mistakeThe one-metre, two-metre rule (grid layout)

“A spotlight every 2 metres? That rule will make your villa look like a supermarket!”

The problem
Spacing lights evenly (in a grid) wastes electricity and leaves the ceiling full of holes that are tiring to look at.
Technical explanation
Real lighting design is based on “task distribution”: lighting only the furniture, corridors and artwork, and leaving restful areas (shadows) to create contrast.
The result
A cleaner ceiling with 40% fewer openings, savings on the electricity bill, and twice the sense of luxury.

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Common mistakeThe wrong staircase lighting

“You installed powerful spotlights above the stairs, and the result... a dark, dangerous staircase!”

The problem
Using wide-angle ceiling spotlights for an open staircase, so the light scatters before it reaches the steps.
Technical explanation
Stairs need either very narrow-beam ceiling spots so the light reaches the floor, or better still, low-level wall lights that illuminate the treads directly.
The result
Safety for your family going up and down, and an elegant, hotel-like staircase.

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Common mistakeMiscalculating downlight spacing (d=h)

“Why are there dark patches between every light in your home's corridors? Because the contractor doesn't know this rule!”

The problem
Spacing downlights too far apart and at random.
Technical explanation
The engineering rule for uniformity is (d = h): the distance between the centres of two fittings should equal the fitting's height above the working surface.
The result
A softly and evenly lit corridor that feels more spacious and luxurious.

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Guide values; the final decision rests with a qualified engineer under the applicable code.

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